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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <input type="text" v-color='msg'>

    </div>
    <script src="./vue.js"></script>
    <script>

        var vm = new Vue({
            el: "#app",
            data: {
                msg: {
                    color: 'red'
                }
            },
            methods: {

            }
        })
    </script>
</body>

</html>